Title:
DEVICE FOR SUPPRESSING TRAVEL VIBRATION IN A WORKING VEHICLE
Document Type and Number:
WIPO Patent Application WO/2011/043165
Kind Code:
A1
Abstract:
Disclosed is a device for suppressing travel vibration in a working vehicle, which provides improved working efficiency at relatively high speeds while maintaining the ride quality. The device is connected to a boom cylinder (13) for operating a working machine and controls vibration during travel of a vehicle using an accumulator (26), and comprises a working machine state determination means and a control unit. The working machine state determination means determines whether the state of the working machine is an excavation state or a normal state. The control unit switches from a state in which there is communication between a hydraulic cylinder and the accumulator to a blocked state when the vehicle speed changes from a speed exceeding a first speed to a speed which is less than or equal to said first speed, if it has been determined that the working machine is in an excavation state. The control unit switches from a state in which there is communication between the boom cylinder (13) and the accumulator (26) to a blocked state when the vehicle speed changes from a second speed lower than the first speed to a speed which is less than or equal to said second speed, if it has been determined that the working machine is in a normal state.
Inventors:
MORIMOTO, Katsuyuki (Tsu 23 Futsu-machi, Komatsu-sh, Ishikawa 92, 〒9230392, JP)
森本 克之 (〒92 石川県小松市符津町ツ２３ 株式会社小松製作所 粟津工場内 Ishikawa, 〒9230392, JP)
OHBA, Motoki (Tsu 23 Futsu-machi, Komatsu-sh, Ishikawa 92, 〒9230392, JP)
森本 克之 (〒92 石川県小松市符津町ツ２３ 株式会社小松製作所 粟津工場内 Ishikawa, 〒9230392, JP)
OHBA, Motoki (Tsu 23 Futsu-machi, Komatsu-sh, Ishikawa 92, 〒9230392, JP)
Application Number:
JP2010/065894
Publication Date:
April 14, 2011
Filing Date:
September 15, 2010
Export Citation:
Assignee:
KOMATSU LTD. (2-3-6, Akasaka Minato-k, Tokyo 14, 〒1078414, JP)
株式会社小松製作所 (〒14 東京都港区赤坂２－３－６ Tokyo, 〒1078414, JP)
MORIMOTO, Katsuyuki (Tsu 23 Futsu-machi, Komatsu-sh, Ishikawa 92, 〒9230392, JP)
森本 克之 (〒92 石川県小松市符津町ツ２３ 株式会社小松製作所 粟津工場内 Ishikawa, 〒9230392, JP)
株式会社小松製作所 (〒14 東京都港区赤坂２－３－６ Tokyo, 〒1078414, JP)
MORIMOTO, Katsuyuki (Tsu 23 Futsu-machi, Komatsu-sh, Ishikawa 92, 〒9230392, JP)
森本 克之 (〒92 石川県小松市符津町ツ２３ 株式会社小松製作所 粟津工場内 Ishikawa, 〒9230392, JP)
International Classes:
E02F9/22; F15B11/00
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (South Forest Bldg, 1-4-19 Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, 〒5300054, JP)
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